Combined hydraulic valve and dispersal nozzle



April 27 1926. 1,582,782

0. A. PRICE COMBINED HYDRAULIC VALVE AND DISPERSAL NOZZLE Original FiledAugust 28, 1925 Fla. 1

//VVE/V mm OWEN AL FRED PRICE /15 Aflomqys Patented Apr. 27, 192 6.

UNITED STATES PATENT OFFICE-f OWEiN' ALFRED PRICE, 0] KILMABNOCK,SCOTLAND.

OOMBLNED HYDRAULIC VALVE AND DIBPEBSAL NOZZLE.

Original application filed August '28, 1928, Serial No. 659,807. Dividedand thin application fled June 10, 1924. Serial No. 719,203.

To all whom it may concern:

Be it known that I, OWEN ALFRED PRICE, a British subject, and a residentof Kilmarnook, Scotland, have invented a certain new and useful CombinedHydraulic Valve and Dispersal Nozzle, of which the following is the secification.

Tllls' invention has for its object to provide in combination with avalve of known type, means for dispersing and cushioning the destructiveenergy in high velocity streams of Water, and which for'instance, existsat the outfall of undersluices or discharge regulators for high dams, orin similar cases where high level water is freely discharged intocomparatively shallow river beds, watercourses, reservoirs, penstockchambers, conduit basins, ponds and the like which means in themselvesform the sub ect-matter of an application filed August 28, 1923,serially numbered 659807 for a United States patent, of which thisapplication is divisional.

ccording to that concurrent application, means are provided immediatelyadjacent to the nozzle discharge outlet for the creation of one or morefree spiral vortices in the stream immediately before its release to theatmosphere, the means being such that the device may be predeterminedlyadapted to the water pressure, its volume and the space available fordispersion, and to this end a nozzle is formed with one or more chambersbehind the orifice suitable in shape for the accommodation of afree-spiral-vortex and anterior to this space apparatus is provided toproduce a forced-vortex of such a type that it most eificientlyinitiates that free vortex possessing the desired predeterminedpropertles. The free-vortex conditionhere inbefore referred to exists ina fluid flowing axially in a confined space of substantially cylindricalform if it has, combined with the axial componen of flow, a tangentialcomponent so distributed, across a plane at i right angles to the axis,that the said tangential component varies inversely as the radialdistance from the axis. The nozzle con sists of (1) a divergent conicalportion intended to gradually enlarge the area of the stream in order toprovide space for the insertion of the blading without constricting thet ee channel. (2) A blade element consisting of radiating vanes with acentral hollow boss from which the vanes radiate. The

vanes are shaped so that their pitch or angular disposition, relative tothe axis of the nozzle, gradually becomes less as the distance from theaxis increases, thereby impartin a greater tangential velocity to thecentra water than to the water nearer the circumference. It is to beunderstood however, that the rate of change of pitch of the vanes alongthe radius may be varied. (3) A part usually convergent and truncated,conical, conoidal, or-dome-like providing the space for theconsolidation of the natural free vortex and containing a circularoutlet orifice in axial line. And (4) a central conoidal boss.

Accordin to the present invention, there is combine in this boss a valveof known form, the boss being so proportioned as to embrace theoperating member of that valve.

An example. of the carrying out ofthe invention is illustrated in anaccompanying sheet of drawin s, Figure 1 being a longitudinal sectionaelevation and Figure 2 a transverse sectional elevation along the line22 in Figure 1.

In this example, the conoidal central boss C, from which the blades Biradiate and which is supported from the casin by webs K, is of suchproportions as to em race the operating member H of the valve. In theexample shown in the drawings, I have preferred to show this valveclosing in an upstream direction but the direction of closing isobviously not material. The free vortex chamber is the predetermininginfluence over the behaviour of the apparatus. The forced vortex chamberblades B have angularly disposed faces imparting the necessarytangential velocities to the stream.

The 0 erating member H of the streamlined va ve instead of being oftruncated form as shown may be of annularform closing in a similar axialdirection to that shown, and working in conjunction with a fixedstream-lined central member.

What I claim is A jet dispersal nozzle comprising in combination, andcoaxially arranged, an inlet portion, a blade element consisting ofradiating blades whose pitch'varies inversel with the radius, pted to,form a for e vortex that will rapidly consolidate to a stream-lined formassociated withsaid blade free spiral vortex, and an outlet portion toelement, and a valve within said boss movaaccommodate the free spiralvortex, all coactble longitudinally of the nozzle to open and 10 ing insuch manner that the central portion close the passage through thelatter. I

of the stream is revolved with a higher In t stmiony whereof I havesigned my velocity than the peripheral portion, in comn me to H115speclficahon.

bination with a. central boss of conoidal OWEN ALFRED PRICE.

